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    62.
    发明专利
    未知

    公开(公告)号：DE50207749D1

    公开(公告)日：2006-09-14

    申请号：DE50207749

    申请日：2002-12-06

    Applicant: BASF AG

    Inventor： SIRCH TILMAN ,  KAIBEL GERD ,  WARTINI ALEXANDER ,  DERNBACH MATTHIAS

    IPC: C07C29/38 ,  C07C29/80 ,  C07B61/00 ,  C07C29/141 ,  C07C31/22

    Abstract: Trimethylolpropane is isolated from a reaction mixture which has been obtained by reaction of n-butyraldehyde with formaldehyde in the presence of a base and, if appropriate, hydrogenation of the resulting mixture by distilling the mixture by means of a dividing wall column or a distillation column with a precolumn or a distillation column with an after-column. The process has low capital costs and a low energy consumption and gives reduced formation of high-boiling by-products.

    63.
    发明专利
    未知

    公开(公告)号：AT330923T

    公开(公告)日：2006-07-15

    申请号：AT00985231

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

    IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22 ,  C07C29/141

    Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.

    65.
    发明专利
    未知

    公开(公告)号：DE50301693D1

    公开(公告)日：2005-12-22

    申请号：DE50301693

    申请日：2003-05-21

    Applicant: BASF AG

    Inventor： WARTINI ALEXANDER ,  DERNBACH MATTHIAS ,  HACKMANN CLAUS ,  SIRCH TILMAN

    IPC: C07C29/38 ,  C07C31/22 ,  C08G65/26 ,  C08G65/28

    Abstract: The invention provides a process for preparing polyetherols of polyhydric alcohols by reacting an alkylene oxide with the appropriate polyhydric alcohol in the presence of a base and in the presence or absence of a solvent, wherein the polyhydric alcohol used has a formaldehyde acetal content of less than 500 ppm.

    68.
    发明专利
    未知

    公开(公告)号：MX226058B

    公开(公告)日：2005-02-03

    申请号：MXPA02006394

    申请日：2000-12-21

    Applicant: BASF AG

    Inventor： DERNBACH MATTHIAS ,  KRATZ DETLEF ,  STAMMER ACHIM ,  RUST HARALD ,  SCHULZ GERHARD

    IPC: C07B61/00 ,  C07C29/80 ,  C07C31/22

    Abstract: A process is disclosed for the purification, by distillation, of trimethylolpropane originating from the hydrogenation of 2,2-dimethylolbutanal, said process including the following steps:(a) reaction of n-butyraldehyde with formaldehyde in the presence of catalytic amounts of a tertiary amine, and hydrogenation of the resulting mixture to give a mixture containing trimethylolpropane;(b) separation of water, methanol, trialkylamine and/or trialkylammonium formate by distillation;(c) heating of the residue obtained in (b) under reduced pressure to a temperature at which TMP is volatile and compounds boiling above TMP are cleaved, in order to separate off, by distillation, TMP and compounds more volatile than TMP;(d) distillation of the distillate obtained in (c) in order to separate off the more volatile compounds and recover pure TMP; and(e) optional distillation of the TMP obtained in (d) in order to recover TMP with a low APHA color index.A process is also disclosed in which trialkylammonium formate is distilled under mild conditions from crude mixtures of polyhydric alcohols, predominantly trimethylolpropane.

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